<nav class="navbar main-nav">
    <div class="container">
        <!-- Brand and toggle get grouped for better mobile display -->
        <div class="navbar-header">
            <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
                <span class="sr-only">Toggle navigation</span>
                <i class="fa fa-navicon fa-2x"></i>
            </button>
            <a class="navbar-brand" href="MainIndex.html"><img src="./images/logo.png" alt="" class="logo"></a>
        </div>
        <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
            <ul class="nav navbar-nav navbar-right">
                <li role="presentation"><a href="MainContact.html">Contact us</a></li>
                <li role="presentation" class="active"><a href="MainBlog.html">Blog</a></li>
                <li role="presentation"><a href="#">How it works</a></li>
                <li role="presentation"><a href="SecurityLogin.html">Login</a></li>
            </ul>
        </div>
    </div>
</nav>